WorksheetsUnderstanding Newton's Third Law
Total questions: 25
Worksheet time: 13mins
When a book is resting on a table, which of the following describes the force pair according to Newton's Third Law of Motion?
The book pushes down on the table, and the table pushes up on the book with equal force.
The book pulls the table sideways, and the table pulls the book sideways with equal force.
The book pushes the air, and the air pushes the book with equal force.
The book pulls the table upwards, and the table pulls the book downwards with equal force.
A swimmer pushes against the wall of a pool to start swimming. What is the reaction force according to Newton's Third Law?
The wall pushes back on the swimmer with an equal and opposite force.
The water pushes the swimmer forward with an equal and opposite force.
The swimmer pulls the water backward with an equal and opposite force.
The swimmer pushes the air forward with an equal and opposite force.
If a bird pushes down on the air with its wings, what is the reaction force?
The air pushes the bird forward with an equal and opposite force.
The air pushes the bird upward with an equal and opposite force.
The air pulls the bird downward with an equal and opposite force.
The air pulls the bird backward with an equal and opposite force.
A rocket expels gas downwards. What is the reaction force that allows the rocket to move upwards?
The gas pulls the rocket downwards with an equal and opposite force.
The gas pushes the rocket upwards with an equal and opposite force.
The air pushes the rocket sideways with an equal and opposite force.
The ground pushes the rocket upwards with an equal and opposite force.
When you jump off a small boat into the water, the boat moves backward. Which of the following best explains this observation?
The water pushes the boat forward with an equal and opposite force.
You push the boat backward with an equal and opposite force.
The boat pulls you forward with an equal and opposite force.
The air pushes the boat backward with an equal and opposite force.
A person is standing on a skateboard and throws a ball forward. What happens to the skateboard and why?
The skateboard moves forward because the ball pulls it forward.
The skateboard moves backward because the person exerts an equal and opposite force on it.
The skateboard stays still because the forces cancel out.
The skateboard moves sideways because the ball pushes it sideways.
When a car accelerates forward, what is the reaction force that propels the car?
The road pushes the car forward with an equal and opposite force.
The air pushes the car backward with an equal and opposite force.
The car pulls the road backward with an equal and opposite force.
The car pushes the air forward with an equal and opposite force.
A horse pulls a cart forward. According to Newton's Third Law, what is the reaction force?
The cart pulls the horse backward with an equal and opposite force.
The ground pushes the cart forward with an equal and opposite force.
The air pushes the horse backward with an equal and opposite force.
The cart pushes the ground backward with an equal and opposite force.
When a person walks, they push the ground backward. What is the reaction force that allows them to move forward?
The ground pushes the person forward with an equal and opposite force.
The air pushes the person backward with an equal and opposite force.
The ground pulls the person backward with an equal and opposite force.
The air pulls the person forward with an equal and opposite force.
A fish swims by pushing water backward with its fins. What is the reaction force that moves the fish forward?
The water pushes the fish forward with an equal and opposite force.
The water pulls the fish backward with an equal and opposite force.
The air pushes the fish forward with an equal and opposite force.
The air pulls the fish backward with an equal and opposite force.
When a hammer strikes a nail, what is the reaction force according to Newton's Third Law?
The nail pushes back on the hammer with an equal and opposite force.
The hammer pulls the nail forward with an equal and opposite force.
The air pushes the hammer backward with an equal and opposite force.
The nail pulls the hammer forward with an equal and opposite force.
A person is rowing a boat by pushing water backward with the oars. What is the reaction force that moves the boat forward?
The water pushes the boat forward with an equal and opposite force.
The air pushes the boat backward with an equal and opposite force.
The boat pulls the water forward with an equal and opposite force.
The water pulls the boat backward with an equal and opposite force.
When a balloon releases air and moves forward, what is the reaction force?
The air pushes the balloon forward with an equal and opposite force.
The air pulls the balloon backward with an equal and opposite force.
The balloon pulls the air forward with an equal and opposite force.
The balloon pushes the air backward with an equal and opposite force.
A person pushes a shopping cart forward. What is the reaction force according to Newton's Third Law?
The cart pushes the person backward with an equal and opposite force.
The ground pulls the cart forward with an equal and opposite force.
The air pushes the cart backward with an equal and opposite force.
The cart pulls the ground forward with an equal and opposite force.
When a person kicks a soccer ball, what is the reaction force?
The ball pushes back on the foot with an equal and opposite force.
The air pushes the ball forward with an equal and opposite force.
The ground pulls the ball backward with an equal and opposite force.
The foot pulls the ball forward with an equal and opposite force.
What is Newton's Third Law of Motion?
The force of an object is equal to its mass times its velocity.
For every action, there is an equal and opposite reaction.
For every action, there is a proportional reaction.
An object in motion stays in motion unless acted upon by a force.
Define action and reaction forces.
Reaction forces occur only after a delay.
Action forces are the initial forces exerted by an object, while reaction forces are the equal and opposite forces exerted in response.
Action forces can exist without reaction forces.
Action forces are always greater than reaction forces.
Give an example of action and reaction forces in nature.
A car driving on the road.
A tree swaying in the wind.
A fish swimming in water.
A bird flying in the sky.
How does Newton's Third Law apply when you jump off a small boat?
The boat moves sideways instead of backward when you jump.
Jumping off the boat causes the water to push the boat forward.
Jumping off a small boat causes the boat to move backward due to the equal and opposite reaction force.
The boat remains stationary regardless of the jump.
What happens to the boat when you jump off?
The boat will move in the opposite direction and may rise slightly.
The boat will stay perfectly still.
The boat will move faster in the same direction.
The boat will sink immediately.
How do balanced forces affect an object's motion?
Balanced forces do not change an object's motion.
Balanced forces change the direction of an object's motion.
Balanced forces increase an object's speed.
Balanced forces cause an object to accelerate.
Describe a situation where you can observe Newton's Third Law in sports.
A player jumping to shoot a basketball.
A runner sprinting on a track.
A swimmer diving into the water.
A player kicking a soccer ball.
Explain how Newton's Third Law relates to a rocket launch.
The rocket moves downwards due to gravity.
Expelling gas upwards causes the rocket to stay still.
The rocket's engines create a vacuum that pulls it up.
Newton's Third Law explains that the action of expelling gas downwards results in the reaction of the rocket moving upwards.
How does Newton's Third Law apply to walking?
Newton's Third Law states that walking is a constant motion without any forces involved.
Newton's Third Law states that for every action, there is an equal and opposite reaction, which applies to walking as the ground pushes you forward when you push backward.
The ground pulls you backward when you walk forward.
Walking requires no force; it happens naturally without action.
Provide an example of Newton's Third Law in a car crash.
The car crumples upon impact, absorbing all the force without any reaction.
When a car crashes into a wall, the car pushes against the wall (action), and the wall pushes back against the car with equal force (reaction).
The wall remains unaffected while the car continues to move forward.
The car and wall both explode on contact, releasing energy without any force exchange.
